Abstract
The role of exogenous cysteine (cys) and hydrogen sulfide (supplied as sodium hydrosulfide, NaHS) in the amelioration of Ni toxicity in wheat plants was evaluated in a hydroponic culture system. Exposure of wheat plants to 100 and 200 μM Ni inhibited biomass production, decreased chlorophyll concentration and intensively increased accumulation of Ni in both roots and leaves. Concomitantly, Ni enhanced H2O2 formation, lipid peroxidation (as indicated by malondialdehyde (MDA) accumulation) and the activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), guaiacol peroxidase (GPX) and glutathione reductase (GR) while it decreased the contents of cellular ascorbate and glutathione. Exogenous application of 2 mM NaHS and 50 µM cys separately to Ni solution significantly improved wheat growth but had a slight effect on the reversal of chlorophyll loss caused by Ni stress. NaHS significantly decreased the Ni accumulation in both studied wheat organs whereas cys has a slight effect. Application of NaHS and cys alleviated the oxidative damages as evidenced by the lowered hydrogen peroxide (H2O2) and malondialdhyde (MDA) contents. Exogenous sulpher, particularly NaHS, induced increases in the activities of CAT and GPX and the contents of cellular ascorbate and glutathione which was accompanied by a significant reduction in SOD, APX and GR activities in the in both wheat organs. These results reveal the potentiating effect of NaHS and cys in regulating Ni- induced oxidative stress in wheat plants.
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Claims 16
Claim · model-written summary
Nickel inhibited wheat biomass production.
- Taxon
- wheat plants
Triticum aestivume0 - Treatment
- 100 and 200 μM Nie0
- Outcome
- biomass productione0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exposure of wheat plants to 100 and 200 μM Ni inhibited biomass production”
Claim · model-written summary
Nickel decreased wheat chlorophyll concentration.
- Taxon
- wheat plantsTriticum aestivume0
- Treatment
- 100 and 200 μM Nie0
- Outcome
- chlorophyll concentratione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exposure of wheat plants to 100 and 200 μM Ni inhibited biomass production, decreased chlorophyll concentration”
Claim · model-written summary
Nickel raised accumulation of Ni in roots and leaves.
- Taxon
- wheat plantsTriticum aestivume0
- Treatment
- 100 and 200 μM Nie0
- Outcome
- accumulation of Ni in both roots and leavese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exposure of wheat plants to 100 and 200 μM Ni inhibited biomass production, decreased chlorophyll concentration and intensively increased accumulation of Ni in both roots and leaves.”
Claim · model-written summary
Nickel increased H2O2 formation and lipid peroxidation.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Nie0
- Outcome
- H2O2 formation, lipid peroxidatione0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ni enhanced H2O2 formation, lipid peroxidation (as indicated by malondialdehyde (MDA) accumulation)”
t0“WHEAT”
Claim · model-written summary
Nickel enhanced SOD, CAT and APX activities.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Nie0
- Outcome
- activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX)e0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ni enhanced H2O2 formation, lipid peroxidation (as indicated by malondialdehyde (MDA) accumulation) and the activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), guaiacol peroxidase (GPX) and glutathione reductase (GR)”
t0“WHEAT”
Claim · model-written summary
Nickel enhanced GPX and GR activities.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Nie0
- Outcome
- guaiacol peroxidase (GPX) and glutathione reductase (GR)e0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ni enhanced H2O2 formation, lipid peroxidation (as indicated by malondialdehyde (MDA) accumulation) and the activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), guaiacol peroxidase (GPX) and glutathione reductase (GR)”
t0“WHEAT”
Claim · model-written summary
Nickel decreased cellular ascorbate and glutathione.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Nie0
- Outcome
- contents of cellular ascorbate and glutathionee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ni enhanced H2O2 formation, lipid peroxidation (as indicated by malondialdehyde (MDA) accumulation) and the activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), guaiacol peroxidase (GPX) and glutathione reductase (GR) while it decreased the contents of cellular ascorbate and glutathione.”
t0“WHEAT”
Claim · model-written summary
NaHS significantly improved wheat growth under nickel stress.
- Taxon
- wheatTriticum aestivume0
- Treatment
- 2 mM NaHSe0
- Outcome
- wheat growthe0
- Direction
- improvede0
- Comparator
- Ni solutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous application of 2 mM NaHS and 50 µM cys separately to Ni solution significantly improved wheat growth”
Claim · model-written summary
Cysteine significantly improved wheat growth under nickel stress.
- Taxon
- wheatTriticum aestivume0
- Treatment
- 50 µM cyse0
- Outcome
- wheat growthe0
- Direction
- improvede0
- Comparator
- Ni solutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous application of 2 mM NaHS and 50 µM cys separately to Ni solution significantly improved wheat growth”
Claim · model-written summary
NaHS and cysteine only slightly reversed nickel-induced chlorophyll loss.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- reversal of chlorophyll losse0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but had a slight effect on the reversal of chlorophyll loss caused by Ni stress.”
t0“WHEAT”
Claim · model-written summary
NaHS significantly decreased nickel accumulation in both wheat organs.
- Taxon
- wheatTriticum aestivume0
- Treatment
- NaHSe0
- Outcome
- Ni accumulation in both studied wheat organse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaHS significantly decreased the Ni accumulation in both studied wheat organs whereas cys has a slight effect.”
Claim · model-written summary
Cysteine had a slight effect on nickel accumulation.
- Taxon
- wheatTriticum aestivume0
- Treatment
- cyse0
- Outcome
- Ni accumulation in both studied wheat organse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaHS significantly decreased the Ni accumulation in both studied wheat organs whereas cys has a slight effect.”
Claim · model-written summary
NaHS lowered wheat H2O2 and MDA contents under nickel stress.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- NaHSe0
- Outcome
- hydrogen peroxide (H2O2) and malondialdhyde (MDA) contentse0
- Direction
- lowerede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of NaHS and cys alleviated the oxidative damages as evidenced by the lowered hydrogen peroxide (H2O2) and malondialdhyde (MDA) contents.”
t0“WHEAT”
Claim · model-written summary
Cysteine lowered wheat H2O2 and MDA contents under nickel stress.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- cyse0
- Outcome
- hydrogen peroxide (H2O2) and malondialdhyde (MDA) contentse0
- Direction
- lowerede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of NaHS and cys alleviated the oxidative damages as evidenced by the lowered hydrogen peroxide (H2O2) and malondialdhyde (MDA) contents.”
t0“WHEAT”
Claim · model-written summary
Exogenous sulfur increased CAT and GPX activities and cellular ascorbate and glutathione, especially with NaHS.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Exogenous sulpher, particularly NaHSe0
- Outcome
- activities of CAT and GPX and the contents of cellular ascorbate and glutathionee0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous sulpher, particularly NaHS, induced increases in the activities of CAT and GPX and the contents of cellular ascorbate and glutathione”
t0“WHEAT”
Claim · model-written summary
Exogenous sulfur reduced SOD, APX and GR activities in both wheat organs.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- SOD, APX and GR activities in the in both wheat organse0
- Direction
- reductione0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which was accompanied by a significant reduction in SOD, APX and GR activities in the in both wheat organs.”
t0“WHEAT”
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